Dataset. The Oulu-CASIA [1]} is a facial expression recognition dataset that contains 6 expressions: Happy, Sad, Surprised, Angry, Fear, and Disgust. This dataset was collected from 80 people aging from 23 to 58. Among them 73.8% were male and 26.2% were female. The dataset was collected in a lab environment where the subjects were asked to sit about 60 cm away from the camera. The videos were collected in 25 frames per second at a spatial resolution of \(320\times 240\) .
